19745313

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 15091167

約数列:

[1, 3, 7, 17, 19, 21, 41, 51, 57, 71, 119, 123, 133, 213, 287, 323, 357, 399, 497, 697, 779, 861, 969, 1207, 1349, 1491, 2091, 2261, 2337, 2911, 3621, 4047, 4879, 5453, 6783, 8449, 8733, 9443, 13243, 14637, 16359, 20377, 22933, 25347, 28329, 39729, 49487, 55309, 61131, 68799, 92701, 148461, 160531, 165927, 278103, 346409, 387163, 481593, 940253, 1039227, 1161489, 2820759, 6581771, 19745313]

約数ペア:

[(1, 19745313), (3, 6581771), (7, 2820759), (17, 1161489), (19, 1039227), (21, 940253), (41, 481593), (51, 387163), (57, 346409), (71, 278103), (119, 165927), (123, 160531), (133, 148461), (213, 92701), (287, 68799), (323, 61131), (357, 55309), (399, 49487), (497, 39729), (697, 28329), (779, 25347), (861, 22933), (969, 20377), (1207, 16359), (1349, 14637), (1491, 13243), (2091, 9443), (2261, 8733), (2337, 8449), (2911, 6783), (3621, 5453), (4047, 4879)]